Heat element

the heated dry cycle does not shut off. anytime the door is closed the element heats up. A friend told me it may be the thermostat needs replaced but I want to know if that is correct.

Most likely the problem is a bad control board.

Here are the breakdown diagrams and Replacement parts for FRIGIDAIRE PLD2855RFC1 Frigidaire/dishwasher | AppliancePartsPros.com

Gene.